Description
For this assignment, you need to use graphics and numerical methods to illustrate the statistical concepts you have learned. You need to construct frequency tables, histograms, bar graphs, and box plots, as examples of how to grasp meaningful information from a numerical or graphical examination of a set of data.
Unformatted Attachment Preview
Purchase answer to see full attachment
Explanation & Answer
This is the update
TIM7100
Data File 2
Assignment 2
1. Disgruntled shareholders who put pressure on corporate management to make certain
financial decisions may be referred to as shareholder activists. A survey of 240 large
investors was conducted to determine how widespread shareholder activism is. One
question asked was “If the chief executive officer and the board of directors differed on
company strategy, what action would you, as a large investor of the firm, take?
Response
Number of Investors
Seek formal explanation
154
Seek CEO performance review
49
Dismiss CEO
20
Seek no action
17
Total
240
a. Construct a relative frequency table for the data.
Seek formal explanation
Seek CEO performance review
Dismiss CEO
Seek no action
Total
Frequency
154
49
20
17
240
Relative Frequency
0.6417
0.2042
0.0833
0.0708
1
b. Display the relative frequencies in a graph.
c. Discuss the findings.
2. More than 20 years ago, a survey of 2,016 small businesses (defined as having fewer than
100 employees) were surveyed regarding their weekly Internet usage to advertise and sell
their products. The survey found 1,855 small business did not use the Internet, 121 used
the Internet from one to five hours per week, and 40 that used the Internet six or more
hours per week.
a. Identify the variable measured in the survey.
Weekly internet usage of small businesses.
b. Summarize the survey results with a graph.
Weekly Internet Usage by small businesses
40
121
1855
No Internet use
Use Internet 1-5 hours per week
Use Internet 6 or more hours per week
c. What portion of the 2,016 businesses used the Internet on a weekly basis?
100 – 92= 6%
Percentage = 8%
d. If the same survey were conducted today, show the results you would expect in a
frequency table. Explain your projected findings.
3. Consider the following set of data, which represents the reported company percentage of
revenue spent for research and development.
Company
1
2
3
4
5
6
7
8
9
10
11
12
13
Percentage of Revenues Spent on Research and Development
Percentage Company Percentage Company Percentage Company
13.5
14
9.5
27
8.2
40
8.4
15
8.1
28
6.9
41
10.5
16
13.5
29
7.2
42
9.0
17
9.9
30
8.2
43
9.3
18
6.9
31
9.6
44
9.7
19
7.5
32
7.2
45
6.6
20
11.1
33
8.8
46
10.6
21
8.2
34
11.3
47
10.1
22
8.0
35
8.5
48
7.1
23
7.7
36
9.4
49
8.0
24
7.4
37
10.5
50
7.9
25
6.5
38
6.9
6.8
26
9.5
39
6.5
a. Create a stem-and-leaf display for these data.
b. Generate a histogram for these data. Use a bin width of 1.1.
c. Calculate the mean, median, and mode for these data.
d. Calculate the range and standard deviation for the percentages.
Percentage
7.5
7.1
13.2
7.7
5.9
5.2
5.6
11.7
6.0
7.8
6.5
SOURCE: MBS, Figure 2.7, p. 37 – 58.
4. Construct a frequency table for the weight (in pounds) given below of 36 cans of regular
Coke. Start the first bin at 0.7900 pound and use a bin width of 0.0050 pound. Discuss
your findings.
0.8192
0.8062
0.7901
0.8161
0.8165
0.8207
0.8150
0.8128
0.8244
0.8194
0.8143
0.8152
0.8163
0.8172
0.8073
0.8189
0.8229
0.8126
0.8211
0.8110
0.8079
0.8194
0.8150
0.8295
0.8181
0.8251
0.8044
0.8176
0.8152
...